- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00435682
To Study the Peripheral Effect of Botulinum Toxin-A (Botox-A) on Experimentally Induced Cutaneous Pain in Healthy Subjects
This is a human trial to study the peripheral effect of therapeutic botulinum toxin (botox-A). The trial is performed on healthy normal males. The study comprises of two parallel placebo-controlled, double blinded studies.
In experiment 1 intramuscular Botox will be given in corrugator (one site) and frontalis (two sites) muscles on one side and placebo to the other side. Intradermal (i.d.) capsaicin injection will be given to both sides (between the two sites of frontalis injection horizontally). Capsaicin-induced pain intensity and flare together with the area of hypersensitivity to different stimulus modalities will be measured and mapped at specific time points using different cutaneous stimuli (thermal, electrical, tactile, pressure). This will characterize which fibres and receptors are affected by Botox and will show if Botox have a unilateral effect (peripheral) or if it also affects the contralateral side (central effect).
In experiment 2 intradermal Botox will be given in corrugator (one site) and frontalis (two sites) muscles on one side and placebo to the other side. I.d. capsaicin injection will be given to both sides (between the two sites of frontalis injection horizontally). Capsaicin-induced pain intensity and flare together with the area of hypersensitivity to different stimulus modalities will be measured and mapped at specific time points using different cutaneous stimuli (thermal, electrical, tactile, pressure). This will characterize which fibres and receptors are affected by Botox. The effect of intradermal Botox will be compared to the results of experiment 1.
The two experiments will show if the intramuscular Botox exerts its action via a leak of Botox from the muscle to the overlying skin.
Antipruritic effects of Botox on histamine prick test and itch will also be assessed in parallel with the experiment 2. In this sub-experiment, 5 Units of Botox will be injected intradermally in the middle of volar forearm. The same volume of placebo will be injected into the other side. Histamine prick test will induce itch and the effect of intradermal Botox will be assessed compared to the baseline. Flare area and visual analogue scale (VAS) ratings will be measured.
Study Overview
Study Type
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Aalborg, Denmark
- Aalborg University Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Signed and dated Written Informed Consent
- Male, 18 40 years of age
- No concomitant medical diseases or clinically significant abnormal findings based on the medical history and baseline physical examination, that could affect the conduct of the study, analysis of the data, or the safety of a subject, as determined by the investigator.
- In the opinion of the investigator, the subject clearly understands the intent of the study and is willing and able to comply with study instructions, is available for study visits and procedures and is anticipated to complete the entire study
Exclusion Criteria:
- Any medical condition that may put the subject at increased risk with exposure to Botox, such as myasthenia gravis, Lambert-Eaton syndrome, amyotrophic lateral sclerosis or any other significant disease that might interfere with neuromuscular function, including peripheral neuropathies.
- Concurrent use or use within 30 days of screening of aminoglycoside antibiotics, curare like agents or other agents that might interfere with neuromuscular function
- Known allergy or sensitivity to any of the ingredients in the study medication or any clinical supply materials.
- Current or previous participation in another investigational drug or device study within 30 days prior to screening.
- Current or previous use of any serotype of botulinum toxin, or anticipated need for treatment with or use of any serotype of botulinum toxin during the study (other than the study medication).
- Recent history of drug or alcohol abuse.
- Indications which in the investigator's opinion, indicates inappropriate/illicit substance abuse, an underlying significant medical condition or which might interfere with the subject's participation in the study.
- Infection or dermatological condition at the sites of study medication injection or test site.
- Family history of hereditary neuropathy.
- Any disease associated with a peripheral neuropathy (diabetes, etc.)
- Anticipated need for a medical procedure, surgery or overnight hospitalization during the study
- Concurrent use of any drug
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Health Services Research
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
---|
To determine the peripheral effect of Botox on capsaicin induced pain and related vasomotor responses.
|
Secondary Outcome Measures
Outcome Measure |
---|
To determine which peripheral nociceptors (pain sensitive nerve endings) are blocked by Botox.
|
To determine the effect of intradermal Botox on itch.
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Chair: Lars - Arendt-Nielsen, Prof., Dr.Med.Sci., Ph.D., Aalborg University, Center for Sensory-Motor Interaction (SMI)
- Principal Investigator: Asbjoern Mohr Drewes, MD, PhD, DMSc, Prof., Aalborg University Hospital
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 2006-001251-35
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Healthy
-
Prevent Age Resort "Pervaya Liniya"RecruitingHealthy Aging | Healthy Diet | Healthy LifestyleRussian Federation
-
Yale UniversityNot yet recruitingHealth-related Benefits of Introducing Table Olives Into the Diet of Young Adults: Olives For HealthHealthy Diet | Healthy Lifestyle | Healthy Nutrition | CholesterolUnited States
-
Maastricht University Medical CenterCompletedHealthy Volunteers | Healthy Subjects | Healthy AdultsNetherlands
-
Hasselt UniversityRecruitingHealthy | Healthy AgingBelgium
-
Galera Therapeutics, Inc.Syneos HealthCompleted
-
Galera Therapeutics, Inc.Syneos HealthCompletedHealthy | Healthy VolunteersAustralia
-
University of PennsylvaniaActive, not recruitingHealthy | Healthy AgingUnited States
-
Chalmers University of TechnologyGöteborg UniversityCompletedHealthy | Nutrition, HealthySweden
-
University of ManitobaNot yet recruitingHealthy | Healthy Diet
Clinical Trials on Botox (Allergan Inc., US)
-
Kevser SokmenCompleted
-
Singapore National Eye CentreSingapore Eye Research Institute; Nanchang UniversityCompletedDry Eye SyndromesSingapore
-
Rabin Medical CenterCompletedThyroid Associated OphthalmopathiesIsrael
-
Singapore National Eye CentreNational University, Singapore; Singapore Eye Research InstituteCompleted
-
Stanford UniversityAllerganCompletedUrinary Incontinence | Parkinson's Disease | Neurogenic Bladder | Clostridium Botulinum Toxin Adverse ReactionUnited States
-
University of Texas Southwestern Medical CenterTerminated
-
Peking UniversityCompletedBotulinum Toxins, Type A | SmilingChina
-
Peking UniversityCompletedBotulinum Toxins, Type A | SmilingChina
-
Seinajoki Central HospitalCompletedTennis Elbow | Epicondylitis, Lateral HumeralFinland
-
Assistance Publique - Hôpitaux de ParisKarolinska Institutet; University of AarhusCompletedTrigeminal Neuropathy, TraumaticFrance